Why can the 40Kn Shear Resistance High Quality Safety Chain Lock achieve a heat treatment hardness of HRC55°~60° and pass a 600-hour UV test?

A high-quality safety chain lock needs to have strong anti-theft performance and be able to remain stable and durable in various environments.
Heat treatment hardness of HRC55°~60°
The 40Kn Shear Resistance High Quality Safety Chain Lock can achieve a heat treatment hardness of HRC55°~60° because it uses high-quality carburized steel materials and advanced heat treatment processes. Carburized steel is a specially treated steel material. After carburizing, its surface can improve the hardness and wear resistance of the surface, while the interior maintains a certain toughness to prevent brittle fracture when impacted. By precisely controlling the temperature and time of heat treatment, it can be ensured that the lock core and chain have good toughness and fatigue resistance while achieving high hardness. This high hardness can effectively resist various physical attacks such as shearing, stretching and prying, and can also significantly improve the anti-theft performance of the lock to ensure the safety of users' property.
600 hours of UV test
The 600-hour UV test proves the weather resistance and stability of the 40Kn Shear Resistance High Quality Safety Chain Lock under long-term exposure to UV environments. Ultraviolet rays are a type of high-energy electromagnetic radiation that can produce photochemical reactions on materials, causing them to age, fade, and deteriorate in performance. During the design and manufacturing process, the 40Kn Shear Resistance High Quality Safety Chain Lock fully considers the impact of ultraviolet rays and adopts materials and coating technology with excellent weather resistance. The coating on the surface of the lock body and chain can effectively absorb and reflect ultraviolet rays to prevent ultraviolet rays from damaging the internal structure. In addition, the structural design of the lock has also been optimized to ensure that there will be no deformation, cracking, or functional failure under long-term ultraviolet irradiation. The 600-hour ultraviolet test verifies the weather resistance of the lock, and also ensures its long-term reliability and durability in various harsh environments, providing users with lasting security.
Meet the personalized needs of users
The 40Kn Shear Resistance High Quality Safety Chain Lock strives for excellence in materials and processes, and fully considers the actual needs of users in design. Its 95-cm long chain lock, equipped with a high-security grade lock cylinder and 2 standard keys, is suitable for the anti-theft needs of various bicycles, motorcycles, strollers and other means of transportation. The net weight of the lock is 2.58 kg, which ensures sufficient strength and safety while taking into account portability. The appearance and color of the lock can be customized by ODM to meet the personalized needs of different users.